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Extending the range of Plug-in Hybrid Electric Vehicles by CVT transmission optimal management

Extending the range of Plug-in Hybrid Electric Vehicles by CVT transmission optimal management
Extending the range of Plug-in Hybrid Electric Vehicles by CVT transmission optimal management
Due to the ability to obtain energy from direct connection to the electricity grid, plug-in hybrid electric vehicles benefit both society and drivers environmentally and economically by reducing energy consumption and emissions. To extend the travel range, existing studies focus mostly on optimizing the power split of the internal combustion engine and battery without considering the impact of the transmission system. This paper deals with the optimization of a continuously variable transmission (CVT) operation for a parallel pre-transmission hybrid powertrain. The novelty of this paper is that the operation of both engine and CVT transmission are optimized together, resulting in a better fuel efficiency. Simulation work has been carried out to compare the performance of the optimized CVT transmission with a fixed transmission, showing that the fuel consumption is reduced and hence the range is increased for the optimized CVT, which makes the engine to operate in higher efficiency points. A key advantage of the formulation proposed is that the result of the optimization process may be expressed in terms of a 2D map that for any pair of vehicle speed and traction force gives the optimal value of the CVT transmission ratio. Such a map may be easily implemented in real vehicular applications.
1876-6102
17-22
Yan, Xingda
2d256fbf-9bee-4c5e-9d75-fe15d1a96ade
Fleming, James
b59cb762-da45-43b1-b930-13dd9f26e148
Lot, Roberto
ceb0ca9c-6211-4051-a7b8-90fd6f0a6d78
Yan, Xingda
2d256fbf-9bee-4c5e-9d75-fe15d1a96ade
Fleming, James
b59cb762-da45-43b1-b930-13dd9f26e148
Lot, Roberto
ceb0ca9c-6211-4051-a7b8-90fd6f0a6d78

Yan, Xingda, Fleming, James and Lot, Roberto (2018) Extending the range of Plug-in Hybrid Electric Vehicles by CVT transmission optimal management. Energy Procedia, 151, 17-22. (doi:10.1016/j.egypro.2018.09.021).

Record type: Article

Abstract

Due to the ability to obtain energy from direct connection to the electricity grid, plug-in hybrid electric vehicles benefit both society and drivers environmentally and economically by reducing energy consumption and emissions. To extend the travel range, existing studies focus mostly on optimizing the power split of the internal combustion engine and battery without considering the impact of the transmission system. This paper deals with the optimization of a continuously variable transmission (CVT) operation for a parallel pre-transmission hybrid powertrain. The novelty of this paper is that the operation of both engine and CVT transmission are optimized together, resulting in a better fuel efficiency. Simulation work has been carried out to compare the performance of the optimized CVT transmission with a fixed transmission, showing that the fuel consumption is reduced and hence the range is increased for the optimized CVT, which makes the engine to operate in higher efficiency points. A key advantage of the formulation proposed is that the result of the optimization process may be expressed in terms of a 2D map that for any pair of vehicle speed and traction force gives the optimal value of the CVT transmission ratio. Such a map may be easily implemented in real vehicular applications.

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More information

Accepted/In Press date: 3 September 2018
e-pub ahead of print date: 1 November 2018
Venue - Dates: 3rd Annual Conference in Energy Storage and Its Applications, United Kingdom, 2018-09-11 - 2018-09-12

Identifiers

Local EPrints ID: 425653
URI: http://eprints.soton.ac.uk/id/eprint/425653
ISSN: 1876-6102
PURE UUID: afa0d841-a73d-4d87-be05-4e562b1cbc1e
ORCID for James Fleming: ORCID iD orcid.org/0000-0003-2936-4644
ORCID for Roberto Lot: ORCID iD orcid.org/0000-0001-5022-5724

Catalogue record

Date deposited: 31 Oct 2018 17:30
Last modified: 05 Feb 2020 05:01

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